A 55-year-old man is in grave condition after being pushed and severely injured during a Hank Williams Jr. concert at DTE Music Theatre on Sunday, according to the Oakland County Sheriff's office.MLive.Com file

INDEPENDENCE TOWNSHIP, MI -- A 55-year-old man is in grave condition after being pushed and severely injured during a Hank Williams Jr. concert at DTE Music Theatre on Sunday, according to the Oakland County Sheriff's office.

Sheriff's deputies were called to the venue's concourse area at 10:55 p.m. and found a 55-year-old man lying on the floor in a pool of blood, police said.

Witnesses told police the man was pushed by a teenage boy and that he fell and struck his head on concrete.

The 15-year-old suspect was detained by witnesses until police arrived, according to the sheriff's office.

The boy and his father were taken to a police station and interviewed and the teen was initially lodged at Oakland County Children’s Village before being released pending further investigation and review by the prosecutor's office.

The victim was taken to McLaren Oakland Hospital in Pontiac, where he was listed in critical condition.

Sgt. Rich Cummins said Monday afternoon he was on life support and in "very grave condition."